Sash-fastener.



PATBNTED AUG. 22, 1905.

T WERTZ SASH FASTENER.

APPLICATION FILED SEPT. 29, 100%.

. 8mm T llama; W e 9' Zz UNITED STATES THOMAS WERTZ, OF ST. LOUIS,MISSOURI.

SASH-FASTENER.

Specification of Letters Patent.

Patented Aug. 22, 1905.

"Applioation filed September 29,1904. Serial No. 226.552.

To all whom it may concern.-

Be it known that I, THoMAs VVERTZ, a citi- Zen of the United States,residing at St. Louis, State of Missouri, have invented certain new anduseful Improvements in Sash-Fasteners;

and I do declare the following to be a full,

clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to improvements in sash-fasteners.

The object of the invention is to provide a device of this character bywhich either or both the upper and lower sashes may be locked in aclosed or partly-opened position.

A further object is to provide a sash-fastener of this character whichwill be simple in construction, efficient, and easily operated and whichmay be readily applied to the sash of a window.

WVith these and other objects in view the invention consists of certainnovel features of construction, combination, and arrangement of parts,as will be hereinafter more fully described, and particularly pointedout in the appended claim.

In the accompanying drawings, Figure 1 is a front elevation of a windowframe and sash, showing the application of the invention. Fig. 2 is acentral vertical sectional view of the same, showing in full lines thesashes closed and locked by the improved fastener and in dotted linesshowing the fastener disengaged to permit said sashes to be raised orlowered; and Fig. 3 is a detail vertical sectional view on the line 3 3of Fig. 2.

Referring more particularly to the drawings, 1 denotes the window-frame.2 denotes the lower sash, and 3 the upper sash, of said window-frame. 1nthe top side of the upper rail of the lower sash is formed a recess 1,in the ends of which are arranged curved bearingplates 5. In the recess4 is arranged a horizontally-disposed pintle 6, the ends of which areadapted to bear in the curved plates 5.

Above the pintle 6 and secured to the upper side of the cross-piece ofthe lower sash is a retaining plate 7, having formed therein curvedbearing-surfaces which are adapted to engage the upper side of thepintle 6 above the bearing-plates 5, thereby holding said pintle inplace. In the curved portions of the plate 7 are formed oil-holes 8,through which oil may be applied to the pintle. In the plate 7 midwaybetween the ends of the same, is formed an aperture 9, through which isadapted to project an arm or pawl 10, the lower end of which is securedto the pintle 6, or, if desired, said pawl or arm may be cast integralwith said pintle. The upper end of the pawl 10 is beveled to form awedge-shaped edge which is adapted to be engaged with one of a series ofratchet-teeth 12, formed on a vertically-disposed bar 13, which issecured to the mid-rail 14: of the upper sash.

In order that the pawl or arm 10 may be normally held in engagement withthe ratchetteeth 12 on the bar 13, a spring 15 is provided, said springhaving one end encircling the pintle 6 and bearing against the lower endof the pawl 10, while the opposite end of said spring is adapted to bearupon a plate 16, which is countersunk in the top rail of the lower sashadjacent to the lower end of said pawl. The tendency of said spring isto normally force the upper end of the pawl into engagement with theratchet-teeth 12.

Secured to the outer side of the pawl 10, near the upper end of thesame, is the upper end of a short chain 17, to the lower end of which issecured an apertured catch-plate 18.

Said plate 18 is adapted to be engaged with a screw or other suitableprojection 19, which is secured to the mid-rail of the lower sash, andwhen so engaged will hold the pawl 1.0 out of engagement with theratchet-teeth 12, thus permitting the window-sashes to be raised andlowered. The lower end of the plate 18 is curved slightly outward toform a handle, whereby the same may be readily engaged or disengagedwith the screw or projection 19.

The bar 13 may be provided with any suitable number of teeth, with whichthe end of the pawl 10 may be engaged, thereby permitting one or both ofthe sashes to be adjusted, so that the room or apartment may beventilated without danger of the window being opened sufficiently toadmit an intruder.

A fastener constructed as herein shown and described cannot be opened ortampered with from the outside except by breaking the glass in one orthe other sashes, and owing to the spring 15 the pawl cannot be jarredor shaken out of engagement with the teeth of the rackbar, therebyaffording a strong and reliable fastening device which may be quicklyand easily applied to a window.

From the foregoing description, taken in connection with theaccompanying drawings, the constructionand operation'of the inventionwill be readily understood without requiring a more extendedexplanation.

ing-plate arranged above the latter to hold =the same in place, arack-bar secured to the mid-rail of the upper sash, a spring arranged onsaid pintle to normally engage said pawl with the teeth of said rack andmeans whereby said pawl may be held disengaged from the same,substantially as described.

In testimony whereof I have hereunto set my hand in presence oftwosubscribing witnesses.

THOMAS W'ERTZ. Witnesses:

J. C. WERTZ,

CHARLES M. LANE.

